Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d81c915b4686baa…

MALICIOUS

PDF

100.7 KB Created: 2021-11-26 05:13:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: ab3b258821533ff1a26d0a3f8e5f85b4 SHA-1: a1b6ab48b090e12351337f60dde760de85c1efd2 SHA-256: 5d81c915b4686baa8d0700363b2637004d33eb15290838c52c28d89df16bb6f4
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9877

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://fotobolfestmeny.hu/mvc/userfiles/file/35974331496.pdf In PDF document text
    • http://verzorgingsindex.nl/images/uploads/80163659801.pdfIn PDF document text
    • https://halobysciton.com/wp-content/plugins/formcraft/file-upload/server/content/files/16195c1820e4b2---mofamefunipogil.pdfIn PDF document text
    • http://gtlmarinefuel.com/userfiles/file/dasef.pdfIn PDF document text
    • http://hanstime.com/userData/board/file/867143322.pdfIn PDF document text
    • https://shoppe.everybodyisnotdoingit.org/gift/userfiles/files/xujilumowepa.pdfIn PDF document text
    • https://snowcat.pl/admin/ckfinder/userfiles/files/rovudedupikuzamivakuza.pdfIn PDF document text
    • http://jump360.co/upload/files/20211124114858.pdfIn PDF document text
    • https://dcoderesearch.com/uploads/ruzamesuzarix.pdfIn PDF document text
    • https://minhgianggroup.vn/upload/files/55302245508.pdfIn PDF document text
    • https://hotelexpert.ro/uploads/files/xogokusexogipotivabi.pdfIn PDF document text
    • http://kool-house.com/upload/editor/file/38507549243.pdfIn PDF document text
    • http://akiisushi.com/uploads/files/28798759175.pdfIn PDF document text
    • https://verticala.ro/images/userfiles/99704223127.pdfIn PDF document text
    • https://artedeeducar.com.br/ckfinder/userfiles/files/xazaxajoz.pdfIn PDF document text
    • https://lerivagedesmilleetangs.com/caningest/images/file/60803796002.pdfIn PDF document text
    • http://foxadv.net/file/45295723710.pdfIn PDF document text
    • http://qzmrmfhyxh.com/upload/file/sizozedogaziw.pdfIn PDF document text
    • http://gysanya.com/upload/file/211112100851426786r9nelhc87ulp.pdfIn PDF document text
    • http://lollanaclinic.com/image/upload/File/43568412962.pdfIn PDF document text
    • https://perfectsextherapy.com/public_html/userfiles/file/8838308693.pdfIn PDF document text
    • http://homeopathyhk.com/files/40959274187.pdfIn PDF document text
    • https://rheinfurth.de/userfiles/file/12076916308.pdfIn PDF document text
    • http://fuzoku-kyujin.jp/ckfinder/userfiles/files/10143717162.pdfIn PDF document text
    • http://arucax.am/user_images/file/61652929577.pdfIn PDF document text
    • http://sapthagireesyathra.srikarpagavinayagamills.com/userfiles/file/xaguworom.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/2I9n2o-U8HI/uplcv?utm_term=administrar+para+la+calidad+mario+guPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001245a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1245A 19344 bytes
SHA-256: 1a918074c4163b99bcfb59d3d61c75606bd200aceb661008bc2dbd333f5eb4ae
font_01_sfnt_off0001558a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1558A 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off00016c2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C2E 10804 bytes
SHA-256: e72c42b05b82a56a6c8647c9b20a55b1ebd0cc36e3255d77b379df8e00359338

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